<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>提示框效果</title>
    <style>
        body,
        div,
        h2,
        ul,
        li {
            margin: 0;
            padding: 0;
        }

        body {
            font: 12px/1.5 Tahoma;
        }

        ul {
            list-style-type: none;
        }

        #outer {
            width: 570px;
            border: 1px solid #333;
            margin: 10px auto;
            padding: 0 0 10px 10px;
        }

        #outer h2 {
            line-height: 30px;
            text-align: center;
            margin-top: 10px;
            display: block;
        }

         #outer ul:after {
            content: ".";
            display: block;
            height: 0;
            clear: both; 
            /* 
                这里为什么要清除浮动？
                因为li作为浮动对象，其父类也没有height，所以li布局脱离父类，而#outer
                也没有被撑开
                http://www.divcss5.com/rumen/r424.shtml#no2         
             */
            visibility: hidden;
        } 

        #outer ul {
            zoom: 1;
            display: inline;
        }

        li {
            position: relative;
            float: left;
            border: 1px solid #333;
            margin: 10px 10px 0 0;     
        }

        #outer ul li img {
            position: absolute;
            top: -14px;
            left: -14px;
            display: none;
            border: 2px solid #999;
            cursor: crosshair;
        }

         li a {
            color: #666;
            width: 80px;
            height: 80px;
            display: block;
            background: #f0f0f0;
            text-decoration: none;
            padding: 10px;
        }

        #outer ul li a strong {
            display: block;
        }

        .zindex {
            z-index: 1;
        }
    </style>
    <script>
        window.onload = function () {
            var oLi = document.getElementsByTagName("li");
            var oA = document.getElementsByTagName("a");
            var oImg = document.getElementsByTagName("img");
            for (var i = 0; i < oLi.length; i++) {
                oA[i].index = oImg[i].index = i;
                oA[i].onmouseover = function () {
                    oLi[this.index].className = "zindex";
                    oImg[this.index].style.display = "block"
                };
                oA[i].onmouseout = function () {
                    oLi[this.index].className = "";
                    oImg[this.index].style.display = "none"
                };
                oImg[i].onmouseover = function () {
                    oLi[this.index].className = "zindex";
                    this.style.display = "block"
                };
                oImg[i].onmouseout = function () {
                    oLi[this.index].className = "";
                    this.style.display = "none"
                }
            }
        }
    </script>
</head>

<body>
    <div id="outer">
        <h2>
            名车车标展示-鼠标移过显示车标
        </h2>
        <ul>
            <li>
                <a href="javascript:;" title="BMW 宝马汽车"><strong>BMW</strong>宝马汽车</a>
                <img src="img/1.jpg" alt="BMW 宝马汽车" />
            </li>
            <li>
                <a href="javascript:;" title="Alfa Romeo 阿尔法-罗米欧"><strong>Alfa Romeo</strong> 阿尔法-罗米欧</a>
                <img src="img/2.jpg" alt="Alfa Romeo 阿尔法-罗米欧" />
            </li>
            <li>
                <a href="javascript:;" title="Skoda 斯柯达"><strong>Skoda</strong> 斯柯达</a>
                <img src="img/3.jpg" alt="Skoda 斯柯达" />
            </li>
            <li>
                <a href="javascript:;" title="Volkswagen 大众汽车"><strong>Volkswagen</strong> 大众汽车</a>
                <img src="img/4.jpg" alt="Volkswagen 大众汽车" />
            </li>
            <li>
                <a href="javascript:;" title="Saab 萨布牌轿"><strong>Saab</strong> 萨布牌轿车</a>
                <img src="img/5.jpg" alt="Saab 萨布牌轿" />
            </li>
            <li>
                <a href="javascript:;" title="Lamborghini 兰博基尼"><strong>Lamborghini</strong> 兰博基尼</a>
                <img src="img/6.jpg" alt="Lamborghini 兰博基尼" />
            </li>
            <li>
                <a href="javascript:;" title="Porsche 保时捷"><strong>Porsche</strong> 保时捷</a>
                <img src="img/7.jpg" alt="Porsche 保时捷" />
            </li>
            <li>
                <a href="javascript:;" title="Peugeot 标致"><strong>Peugeot</strong> 标致</a>
                <img src="img/8.jpg" alt="Peugeot 标致" />
            </li>
            <li>
                <a href="javascript:;" title="Mercedes1 梅赛德斯 奔驰"><strong>Mercedes1</strong> 梅赛德斯 奔驰</a>
                <img src="img/9.jpg" alt="Mercedes1 梅赛德斯 奔驰" />
            </li>
            <li>
                <a href="javascript:;" title="Buick 别克汽车"><strong>Buick</strong> 别克汽车</a>
                <img src="img/10.jpg" alt="Buick 别克汽车" />
            </li>
        </ul>
    </div>
</body>

</html>